Ban Phônsavan Weather in September
Thinking of visiting Ban Phônsavan in September? Expect high temperatures reaching 28°C (82°F) during the day, dropping to 19°C (66°F) at night. Heavy showers are common during the rainy season.
Rainfall in Ban Phônsavan in September
Ban Phônsavan is in the rainy season in September, with rain on around 19 days and an average of 201 mm (7.9 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Ban Phônsavan in September
September in Ban Phônsavan brings typical temperatures with highs around 28°C (82°F) and lows of 19°C (66°F). This kind of day-to-night contrast is typical for this time of year. Nights cool down to 19°C (66°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, October, November and December typically offer the best weather for Ban Phônsavan.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Laos, check out our Ban Phônsavan's climate page.
Ban Phônsavan Temperature in September
Min Temperature
19°C (66°F)
Max Temperature
28°C (82°F)
Chance of Rain
65%
Precipitation
201 mm (7.9 in)
Rainy days
19 days
Historical weather for Ban Phônsavan in September
Browse day-by-day weather records for Ban Phônsavan spanning 48 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ban Phônsavan historical weather extremes in September
Based on 19 years of weather observations (2006-2025), these are the most extreme conditions recorded in Ban Phônsavan.
- Ban Phônsavan recorded its highest September temperature of 31°C (88°F) on September 16, 2009.
- The lowest daytime temperature in September was 20°C (68°F), recorded on September 30, 2008.
- Ban Phônsavan registered its coldest September night on September 21, 2007, with temperatures dropping to 12°C (54°F).
- The wettest September day on record brought 81 mm (3.2 in) of precipitation to Ban Phônsavan (September 29, 2025).
Best Places in Laos in September
Find out more about the weather in Laos and which places have the best travel conditions in this month. See all of Laos in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Ban Phônsavan in September
Warm but pleasant conditions in Ban Phônsavan in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Ban Phônsavan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Laos, check out our Ban Phônsavan's climate page.
See the full Ban Phônsavan climate overview or explore weather in Laos.
